I feel like if they had to do an ML Haslab, this is a pretty good choice. Personally i don't have a need for a 24 inch Giant Man figure with all that hand articulation etc. For me, a BAF or deluxe Giant-Man roughly the same height and articulation scheme as the mcu Giant-Man BAF would have sufficed, but i get that for a Haslab its gotta be more deluxe than retail offerings.
To me, it makes sense to create tiers that really only have value to someone interested in the main offering, rather than having figures like Jarvis or whomever trapped behind a $400 firewall. as for other versions of Hank or Jan etc I'm sure like Galactus they have some figures in the pipeline that they plan to release to coincide with Giant Man's shipping date. Wasp is certainly well-known enough to get her own release, although with Hasbro surely it will be as part of a 2-pack including a repaint of a figure we already all own lol.
All that said, kinda doubt this gets funded. I just don't think Giant Man is that popular, plus i'm sure between the Sentinel and Galactus many collectors are realizing that its not all that easy to display your regular MLs when you have one of these colossal ones around.